To which skeletal system does the sternum belong? spongy skeleton compact skeleton axial skeleton appendicular skeleton

People who exercise for an hour may have lower cholesterol levels. is that a statement? a law? or a hypothesis?

What is the significance of the protein-lined pits? a. protein attracts other proteins needed for atp synthesis within the cell. b. protein-lined pits are able to transport one molecule at a time down the concentration gradient within the cell. c. the polarity of proteins allows other polar molecules to attach and be transported in the cell by transport channels. d. receptors within the pits allow ligands to fuse and be transported into the cell by endocytosis.

What type of reaction is photosynthesis